Date: Mon, 7 Jan 2008 00:14:13 +0100 From: "Johannes Dieterich" <dieterich.joh@googlemail.com> To: freebsd-stable@freebsd.org Subject: Re: overheating Thinkpad X60s with 7.0-RC1 Message-ID: <542798610801061514p971821bna23c81422805022c@mail.gmail.com> In-Reply-To: <20080106225532.GA52707@eos.sc1.parodius.com> References: <542798610801060556h28d300f2n4fdcf21d83d2213f@mail.gmail.com> <47813D8E.9080603@fsck.ch> <542798610801061326o63f731d5o32bef2eb2624f85e@mail.gmail.com> <20080106222040.GB67243@tirith.brixandersen.dk> <20080106225532.GA52707@eos.sc1.parodius.com>
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On 1/6/08, Jeremy Chadwick <koitsu@freebsd.org> wrote: > > > All temperatures were compared when the systems were idling. > > The variance in temperatures was astounding. In some cases, there was a > almost a 20C difference between two machines, especially around the GPU > area. In other cases, batteries were reporting insane temperatures on > one laptop (over 90C), while on another well within scope (~25-26C). Sounds crazy... My particular laptop is a problem child when it comes to noise -- that > is to say, within literally seconds of the machine finishing POST, the > fan kicks on, then 15-20 seconds later, increases speed. My co-workers' > laptops do not have this problem. Cleaning out the heatsink area using > a can of air made no difference. It is rather clean, I'd say. Just recently I changed the keyboard from German version to US and then tried to blow off all the dust. I won't even bother mentioning what happens when I run something that's > CPU or GPU intensive. I haven't had any crashes, but in some cases, > I've seen the GPU temperatures reach over 80C -- completely > unacceptable, and bordering on insane. It's gotten to the point where > to use my T60p *quietly*, I'm forced to prop the rear corners up on > little blocks or whatever, and then place a desk fan nearby, blowing > cold air more or less underneathe the laptop. This keeps the fan in low > speed mode, which is semi-tolerable. Unfortunately this is not an option for me since I am running it at home in the docking station. I *haven't* had any crashes or random system lockups, but many other > co-workers of mine have, and it's safe to say heat is the cause. > > In my opinion, most of these laptops (the T60p series, and very likely > related models!) are being assembled with improper amounts of thermal > paste or TIM pads, without proper surface area contact. Apple recently > had a case of this happening as well with their Macbook Pros, where > their assembly documentation stated they should use an *entire tube* of > thermal paste between the CPU and the heatsink. I don't know why it should then show right now. I mean: could it somehow? Within those 1.5 years of having it, it ran Linux and FreeBSD. And always without a problem. Until now. And I really haven't touched anything in the ACPI configuration. Lenovo should be ashamed at the lack of quality control used when these > things are built. Again, this is a laptop given to me by my workplace > for work, so it's really not my choice (nor can I disassemble it to > examine or fix what the problem might be) -- but if I ever am to buy a > laptop for personal use, Lenovo would not be on my list of vendors. I do agree with you that the quality has decreased dramatically since the IBM/Lenovo deal, IMHO. Still they are the better ones on the market, IMHO. Anyway... I would urge those here to consider booting XP somehow (if possible) and > running tp4xfancontrol to check actual temperatures, since FreeBSD's > h/w monitoring capability is spotty at best (I think Linux wins out > here, but at least there's room for growth...) Sorry. XP is killed completely and I would need to fix myself a HDD from somewhere and install it from scratch... What remains for me, is that it has never been a problem. Until 7.0. And if there is no hardware failure coincidence, it must be a mysterious (at least for me... ;-) ) software/configuration problem. BTW: how certain can I be that the reported temperatures are REAL temperatures? Regards, Johannes
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